Definitions by The True IDIOT

dundersnap 

Often used to insult someone for being stupid for falling on someone's trolls, mainly used by nerds but exceptional qualified gamers.

Another meaning is qualified to snap your head back because of how thick your skull is.

Katsy just called qween a dundersnap!

sans is fake, so he is a dundersnap.

dundersnap by The True IDIOT November 12, 2021